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Texas Instruments THS4082CDR
- Part No.:
- THS4082CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
THS4082CDR.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,668
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Product details
Overview
THS4082CDR from Texas Instruments is a dual-channel, ultralow-power, high-speed voltage-feedback operational amplifier optimized for video and communication signal conditioning. It delivers 175 MHz bandwidth (−3 dB, G = 1), 230 V/µs slew rate, and 43 ns settling time (0.1%) at ±15 V supply, with 3.4 mA per channel quiescent current and 85 mA output drive-enabling high-fidelity analog front-end amplification in broadcast video routing and DSL line drivers.
For engineers reviewing the THS4082CDR datasheet, THS4082CDR pinout, THS4082CDR application, or THS4082CDR equivalent, key selection criteria include its dual-channel SOIC-8 footprint, ±5 V to ±15 V dual-supply operation, low 0.01% differential gain error, −64 dBc THD at 1 MHz (RL = 150 Ω), and thermal performance in PowerPAD™-enhanced DGN-compatible packaging.
Technical Context
The THS4082CDR employs a dielectrically isolated complementary bipolar process enabling GHz-class transistor fT, supporting voltage-feedback architecture with internal compensation optimized for bandwidth–slew rate trade-off. Its dual-channel layout shares no internal coupling beyond substrate-level crosstalk (−75 dB at 1 MHz), and features rail-to-rail input common-mode range (±13.8 V at ±15 V supply) and open-loop gain of 10–19 V/mV.
Designed for stable operation into capacitive loads >10 pF, it requires series output isolation (e.g., 20 Ω) to maintain phase margin; noise performance is dominated by 10 nV/√Hz input voltage noise and 0.7 pA/√Hz input current noise, with noise figure <15 dB at RS = 50 Ω and 10 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (−3 dB) | 175 MHz at ±15 V, G = 1 - supports full HD baseband video amplification without gain peaking |
| Slew Rate | 230 V/µs at ±15 V - enables clean 1080p/60 video pulse response with minimal edge distortion |
| Settling Time (0.1%) | 43 ns at ±15 V, 5-V step - meets tight timing windows in multi-channel ADC driver applications |
| THD | −64 dBc at f = 1 MHz, RL = 150 Ω - preserves signal fidelity in composite video distribution systems |
| Differential Gain/Phase | 0.01% / 0.05° at NTSC, ±15 V - satisfies SMPTE RP 168 broadcast video linearity requirements |
| Supply Current (per channel) | 3.4 mA at TA = 25°C, ±15 V - enables dual-channel high-speed amplification within 100 mW total power budget |
| Output Drive | 85 mA (typ) into 20 Ω - drives 75 Ω coaxial lines directly with 20 Ω series termination for impedance matching |
Pinout & Package
THS4082CDR is supplied in an 8-pin SOIC (D) package with standard pinout and exposed thermal pad option (DGN). The SOIC-8 footprint supports drop-in replacement in legacy layouts while enabling thermal relief via optional PCB copper pour under Pin 4 (VCC−) and Pin 5 (NC).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Channel 1 output | High-current, low-impedance output node; requires local 0.1 µF ceramic decoupling to ground |
| 1IN− | Inverting input (Ch1) | High-impedance node; trace length must be minimized to reduce parasitic capacitance and oscillation risk |
| 1IN+ | Noninverting input (Ch1) | DC-coupled or AC-coupled input; accepts common-mode range up to ±13.8 V at ±15 V supply |
| VCC− | Negative supply rail | Must be decoupled with 6.8 µF tantalum + 0.1 µF ceramic; shared ground plane recommended |
| NC | No internal connection | Thermally isolated pad; may be tied to ground plane for thermal conduction in DGN variant |
| VCC+ | Positive supply rail | Independent decoupling required; not shared between channels for optimal PSRR (>79 dB) |
| 2OUT | Channel 2 output | Electrically isolated from 1OUT; crosstalk −75 dB at 1 MHz ensures independent channel operation |
| 2IN− | Inverting input (Ch2) | Matched to 1IN− in offset and bias current; enables synchronous dual-channel signal processing |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 3.4 mA per channel enables dual-channel high-speed amplification in thermally constrained enclosures |
| Video-optimized linearity | 0.01% differential gain error ensures color fidelity across NTSC/PAL broadcast signal chains |
| Capacitive load drive support | Stable with ≥20 Ω series output resistor - eliminates need for external isolation transformers in 75 Ω systems |
| Wide supply range | Operates from ±5 V to ±15 V dual supply or 10 V to 30 V single supply - simplifies integration into mixed-voltage systems |
| Low input voltage noise | 10 nV/√Hz at 10 kHz enables high-gain amplification of sub-mV sensor signals without SNR degradation |
Applications
| Broadcast Video Distribution | DSL Line Driver |
|---|---|
Use Scenario: Amplifying and distributing composite NTSC video signals across multiple monitors in security control rooms. IC Role / Device Role / Timing Role: Dual-channel buffer and gain stage driving 75 Ω coaxial cables with minimal group delay variation. Use Value: 0.01% differential gain error and 35 MHz 0.1 dB flatness preserve chroma/luma synchronization and prevent hue shifts. | Use Scenario: Transmitting high-frequency upstream/downstream signals over twisted-pair telephone lines in ADSL2+ modems. IC Role / Device Role / Timing Role: High-output-drive line driver interfacing between DAC and hybrid coupler, operating at ±12 V. Use Value: 85 mA output current and 175 MHz bandwidth support 2.2 MHz upstream carriers with <−60 dBc harmonic distortion. |
| Medical Ultrasound Beamformer | Test Equipment Signal Generator |
Use Scenario: Conditioning analog receive paths in portable ultrasound scanners where size and power are critical. IC Role / Device Role / Timing Role: Low-noise, low-power dual-channel amplifier in time-gain compensation (TGC) stages before ADC sampling. Use Value: 3.4 mA per channel quiescent current extends battery life; 10 nV/√Hz input noise maintains dynamic range for weak echo detection. | Use Scenario: Generating precise, low-distortion test waveforms in automated bench instruments requiring dual synchronized outputs. IC Role / Device Role / Timing Role: Dual-channel arbitrary waveform amplifier with matched gain and phase response across channels. Use Value: Channel-to-channel crosstalk of −75 dB and 43 ns settling time ensure independent, jitter-free stimulus generation for device characterization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS4032CDR | 100 MHz bandwidth, 100 V/µs slew rate, 2.5 mA per channel - lower speed, lower power | Preferred for cost-sensitive, lower-bandwidth video monitoring where 0.01% differential gain is noncritical | Select when THS4082CDR's 175 MHz bandwidth is excessive and thermal budget is tighter |
| OPA2691U | 320 MHz bandwidth, 4300 V/µs slew rate, 12.5 mA per channel - higher speed, higher power | Required for >100 MHz RF IF amplification or ultrafast pulse shaping where THS4082CDR's 43 ns settling is insufficient | Select when system demands >200 MHz small-signal bandwidth and can accommodate doubled supply current |
Compared with THS4082CDR, THS4032CDR trades 75 MHz bandwidth and 130 V/µs slew rate for 40% lower quiescent current, while OPA2691U doubles bandwidth and slew rate at triple the supply current-making THS4082CDR the optimal balance for broadcast-grade video and medium-speed communications.
Availability
THS4082CDR is available at Aetrix Electronics and suitable for broadcast video distribution, DSL line driver, medical ultrasound beamformer, and test equipment signal generator applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production lots.
Supply support for THS4082CDR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in high-performance op-amps and signal-chain solutions.
The THS4082CDR belongs to TI's THS408x family of ultralow-power, high-speed voltage-feedback amplifiers, designed specifically for video signal conditioning, communications infrastructure, and precision analog front-ends where bandwidth, distortion, and power efficiency must coexist.
FAQ
What is the maximum supply voltage rating for THS4082CDR?
The absolute maximum supply voltage for THS4082CDR is ±16.5 V on both VCC+ and VCC− rails. Operation beyond this rating risks permanent damage. Recommended operating range is ±5 V to ±15 V dual supply or 10 V to 30 V single supply. Exceeding ±16.5 V violates absolute maximum ratings even for transient conditions, and TI does not guarantee functionality or reliability above this limit for THS4082CDR.
Does THS4082CDR support single-supply operation?
Yes, THS4082CDR supports single-supply operation from 10 V to 30 V. Input common-mode range extends to within 1.2 V of the negative rail and 1.2 V below the positive rail (e.g., 0 V to 28.8 V at 30 V supply), enabling DC-coupled configurations. However, THS4082CDR's specified video performance metrics (e.g., differential gain) are validated only under dual-supply conditions per the datasheet test setup.
What is the thermal resistance (θJA) of THS4082CDR in SOIC-8 (D) package?
The junction-to-ambient thermal resistance (θJA) for THS4082CDR in the standard SOIC-8 (D) package is 167 °C/W when mounted on a JEDEC Low-K test board. With a JEDEC High-K board, θJA improves to 95 °C/W. This value assumes no thermal pad soldering - unlike the DGN variant, the D package lacks an exposed thermal pad, so PCB copper area under the body provides limited thermal relief for THS4082CDR.
Can THS4082CDR drive 75 Ω coaxial cables directly?
THS4082CDR can drive 75 Ω coaxial cables but requires a 20 Ω series resistor at the output to isolate capacitive loading and maintain stability. Without this resistor, ringing or oscillation may occur due to reduced phase margin. The 20 Ω resistor, combined with the 75 Ω cable, forms a proper source-termination network - a design practice explicitly recommended in the THS4082CDR datasheet for video line driving.
Is THS4082CDR pin-compatible with THS4082IDR?
Yes, THS4082CDR and THS4082IDR share identical SOIC-8 (D) package footprints and pinouts. The only difference is temperature grade: THS4082CDR is rated for 0°C to 70°C operation, while THS4082IDR operates from −40°C to 85°C. Electrical specifications are otherwise identical at their respective temperature ranges, making THS4082CDR a direct replacement in commercial-temperature applications.
THS4082CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 230V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 175 MHz
- Current - Input Bias:
- 1.2 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 3.4mA (x2 Channels)
- Current - Output / Channel:
- 85 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
THS4082CDR FAQ
1.How can I place an order for THS4082CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for THS4082CDR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for THS4082CDR reliable?
The price and inventory of THS4082CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THS4082CDR is usually 5 days.
3.What payment methods are accepted for THS4082CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THS4082CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THS4082CDR?
THS4082CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THS4082CDR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for THS4082CDR?
For technical support, including THS4082CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THS4082CDR requirements.
6.How does Aetrix verify that THS4082CDR is sourced from the original manufacturer or authorized distributors?
All THS4082CDR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that THS4082CDR meets industry standards.
7.What is the process for return or replacement of THS4082CDR?
All THS4082CDR units undergo pre-shipment inspection (PSI). If there is an issue with THS4082CDR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The THS4082CDR part is unused and in its original packaging.
Return procedure for THS4082CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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